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Tropical Storm Jangmi Brings Wind and Rain to Japan

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Tropical Storm Jangmi brought wind and rain to parts of Japan on Tuesday.  At 11:00 a.m. EDT on Tuesday the center of Tropical Storm Jangmi was located at latitude 32.8°N and longitude 134.3°E which put the center about 135 miles (215 km) southwest of Osaka, Japan.  Jangmi was moving toward the northeast at 29 m.p.h. (46 km/h).  The maximum sustained wind speed was 60 m.p.h. (95 km/h) and there were wind gusts to 80 m.p.h. (130 km/h).  The minimum surface pressure was 984 mb.

Tropical Storm Jangmi was bringing wind and rain to parts of Honshu on Tuesday.  A weather station at Kansai International Airport in Osaka (RJBB) reported a sustained wind speed of 43 m.p.h. (68 km/h) and a wind gust of 55 m.p.h. (89 km/h).

Tropical Storm Jangmi was making a transition to an extratropical cyclone on Tuesday.  The circulation around Jangmi was interacting with a stationary front that was just south of Japan.  The interaction with the front was causing the distribution of thunderstorms in Tropical Storm Jangmi to become more asymmetrical.  Thunderstorms were occurring in bands in the eastern and northern parts of Jangmi’s circulation.  Bands in the western and southern parts of Tropical Storm Jangmi consisted primarily of showers and lower clouds.

The circulation around Tropical Storm Jangmi was still large. Winds to tropical storm force extended out 240 miles (390 km) from the center of Jangmi’s circulation.

Tropical Storm Jangmi will move through an environment that will be unfavorable for intensification of a tropical cyclone during the next 24 hours.  Jangmi will move over water where the Sea Surface Temperatures are near 23°C.  It will move under the eastern part of an upper level trough that is over South Korea.  The upper level trough will produce strong southwesterly winds that will blow toward the top of Jangmi’s circulation.  Those winds will cause strong vertical wind shear.  The cool Sea Surface Temperature and the strong vertical wind shear will cause Tropical Storm Jangmi to continue to make a transition to an extratropical cyclone during the next 24 hours.

The upper level trough over South Korea will steer Tropical Storm Jangmi toward the east-northeast during the next 24 hours.  On its anticipated track, the center of Tropical Storm Jangmi will pass near Tokyo in 18 hours.

Tropical Storm Jangmi will continue to bring strong winds and locally heavy rain to parts of Honshu.  Heavy rain could cause flash floods in some locations.

Typhoon Cimaron Brings Wind and Rain to Japan

Typhoon Cimaron brought wind and rain to Japan on Thursday.  At 2:00 p.m. EDT on Thursday the center of Typhoon Cimaron was located at latitude 35.9°N and longitude 135.1°E which put it about 70 miles west of Fukui, Japan.  Cimaron was moving toward the north at 26 m.p.h. (42 km/h).  The maximum sustained wind speed was 80 m.p.h. (130 km/h) and there were wind gusts to 90 m.p.h. (145 km/h).  The minimum surface pressure was 979 mb.

The center of Typhoon Cimaron moved near the eastern end of Shikoku early on Wednesday.  Cimaron moved quickly northward and the center passed over Awaji Island.  Typhoon Cimaron made landfall on Honshu west of Kobe and Osaka near Akashi.  Cimaron continued to move quickly toward the north across Honshu and the center of circulation emerged over the Sea of Japan later on Thursday.  Kansai International Airport reported a sustained wind speed of 65 m.p.h. (105 km/h).  Komoda, Japan reported a sustained wind speed of 63 m.p.h. (102 km/h).

Typhoon Cimaron dropped locally heavy rain over parts of Shikoku and southwestern Honshu.  Kobe measured 4.75 inches (120.5 mm) of rain and there could have been higher amounts in mountainous regions where the wind was blowing up the slopes.  The potential for flash floods exists in areas of steep terrain.

Typhoon Cimaron is forecast to weaken over the Sea of Japan.  It will move over cooler water.  In addition, an upper level trough over eastern Asia will produce strong westerly winds that will cause significant vertical wind shear.  The trough is forecast to turn Typhoon Lane toward the east and it could make another landfall over northern Honshu or Hokkaido.  Cimaron will weaken to a tropical storm, but it could drop heavy rain over those areas.

Elsewhere over the Western North Pacific Ocean, Tropical Storm Soulik was making landfall on the southwestern coast of South Korea near Mokp’o.  At 11:00 a.m. EDT on Thursday the center of Tropical Soulik was located at latitude 35.2°N and longitude 126.8°E which put it about 90 miles (145 km) south-southwest of Kunsan, South Korea.  Soulik was moving toward the north-northeast at 14 m.p.h. (22 km/h).  The maximum sustained wind speed was 65 m.p.h. (105 km/h) and there were wind gusts to 80 m.p.h. (130 km/h).  The minimum surface pressure was 985 mb.

The upper level trough over eastern Asia was also causing strong vertical wind shear over Tropical Storm Soulik.  Soulik was weakening as it approached the coast, but it will still be capable of dropping locally heavy rain over portions of South Korea.  The heavy rain could create the potential for flash floods.